Mental imagery-based self-regulation: Effects on physical activity behaviour and its cognitive and affective precursors over time.
Br J Health Psychol
; 27(2): 484-500, 2022 05.
Article
en En
| MEDLINE
| ID: mdl-34523193
ABSTRACT
OBJECTIVES:
(1) Test whether a mental imagery-based self-regulation intervention increases physical activity behaviour over 90 days; (2) Examine cognitive and affective precursors of change in physical activity behaviour.DESIGN:
A randomized control trial with participants (N = 500) randomized to one of six intervention conditions in a 3 (risk communication format bulleted list, table, risk ladder) x 2 (mental imagery behaviour physical activity, active control [sleep hygiene]) factorial design.METHODS:
After receiving personalized risk estimates via a website on a smartphone, participants listened to an audiorecording that guided them through a mental imagery activity related to improving physical activity (intervention group) or sleep hygiene behaviour (active control). Participants received text message reminders to complete the imagery for 3 weeks post-intervention, 4 weekly text surveys to assess behaviour and its cognitive and affective precursors, and a mailed survey 90 days post-baseline.RESULTS:
Physical activity increased over 90 days by 19.5 more minutes per week (95%CI 2.0, 37.1) in the physical activity than the active control condition. This effect was driven by participants in the risk ladder condition, who exercised 54.8 more minutes (95%CI 15.6, 94.0) in the physical activity condition than participants in the active control sleep hygiene group. Goal planning positively predicted physical activity behaviour (b = 12.2 minutes per week, p = 0.002), but self-efficacy, image clarity, and affective attitudes towards behaviours did not (p > 0.05).CONCLUSIONS:
Mental imagery-based self-regulation interventions can increase physical activity behaviour, particularly when supported by personalized disease risk information presented in an easy-to-understand format.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Envío de Mensajes de Texto
/
Autocontrol
Tipo de estudio:
Clinical_trials
/
Prognostic_studies
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Qualitative_research
Idioma:
En
Revista:
Br J Health Psychol
Año:
2022
Tipo del documento:
Article
País de afiliación:
Estados Unidos